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Related Experiment Videos

A simple mathematical formula for custom-made croissant tissue expanders

P L Tonnard1, S J Monstrey, K H Van Landuyt

  • 1Department of Plastic Surgery, University Hospital Gent, Belgium.

Annals of Plastic Surgery
|September 24, 1998
PubMed
Summary

Croissant-shaped tissue expanders offer a tailored approach for elliptical skin defects, simplifying surgical removal. A new mathematical formula aids in designing custom expanders for optimal clinical outcomes.

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Area of Science:

  • Plastic Surgery
  • Dermatologic Surgery
  • Biomedical Engineering

Background:

  • Croissant-shaped tissue expanders have gained popularity over the last five years.
  • These expanders facilitate the creation of custom skin flaps for elliptical defects.
  • Traditional methods often require backcuts or result in dog-ears, complicating reconstruction.

Observation:

  • Elliptical skin defects are common in surgical excisions.
  • Croissant-shaped expanders allow for easy advancement of tailored flaps into these defects.
  • This method avoids complications like dog-ears and the need for backcuts.

Findings:

  • A simple mathematical formula has been developed to calculate the precise dimensions for croissant tissue expanders.
  • This formula enables the design of custom-made expanders tailored to specific defect sizes.

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  • Clinical application demonstrated successful use in designing large custom expanders for a giant nevus patient.

    • Implications:

    • The formula simplifies the design process for custom croissant tissue expanders.
    • This approach enhances surgical efficiency and improves aesthetic outcomes in skin defect reconstruction.
    • It offers a standardized method for creating effective tissue expansion solutions for various elliptical lesions.